A kind of asa resin high rubber powder and preparation method thereof

Abstract

The invention belongs to the field of polymer materials, and relates to a h igh-rubber ASA resin powder and a preparation method thereof. The preparation method of the high-rubber ASA resin powder comprises the following steps: 1) preparation of a seed; 2) preparation of a core; 3) preparation of a shell; and 4) post-treatment, wherein an emulsifier adopted in step 1) to step 3) is a mixture of ananionic surfactant and a nonionic surfactant, and a mass ratio of the anionic surfactant to the nonionic surfactant is (8-9):1; and a reducer solution adopted in the step 1) to step 3) is prepared through dissolving 0.1 g of ferrous sulfate, 1.5 g of sodium formaldehydesulfoxylate and 2 g of ethylenediaminetetraacetic acid in 500 g of deionized water. The preparation method has the advantages oflow temperature in the synthesis process, low energy consumption, easiness in operation, and high conversion rate; the impact strength of the obtained product is greatly improved, is equivalent to that of foreign products, and can basically meet requirements of most application fields; and the autonomous production of the high-rubber ASA resin powder is realized.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an ASA resin high-glue powder and a preparation method thereof. Background technique [0002] ASA resin, also known as AAS resin, is a ternary graft copolymer composed of acrylate, styrene and acrylonitrile. Its structure presents a "sea-island structure" in which the resin is the continuous phase and the rubber is the dispersed phase; The introduction of acrylate rubber without double bonds to replace polybutadiene rubber with double bonds has fundamentally changed the weather resistance of ASA, which is about 10 times higher than that of ABS; and it is also significantly better than ABS in terms of chemical resistance. ABS resin has greatly improved the disadvantages of ABS resin, such as the significant decrease in mechanical strength after long-term exposure outdoors, and the color gradually turning yellow under the action of sunlight. Given that ASA resin has go...

AI Technical Summary

Problems solved by technology

There is no self-synthesized ASA resin on the market in China, and the raw materials of rubber powder are completely imported, and then SAN resin, auxiliary materials, etc. are added for semi-synthesis, and then modified ASA resins that meet different requirements are prepared.